\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{circuitikz}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes,}
\ctikzset{bipoles/length=1cm}
\begin{document}
\small
\begin{circuitikz}[>=latex, scale=0.8,european]
  % \useasboundingbox(0.9,0)rectangle(5.1,5);
  \draw (-2,0) node[above]{$A$} to [R=$R_1$] (2,0) to [bulb=$R_2$] (4,0) to [bulb=$R_4$] (7,0) -- (8,0) node[above]{$B$};
  \draw (1.5,0)--(1.5,-2) to [bulb=$R_3$] (4.5,-2)--(4.5,0);
  \draw [fill=white](-2,0) circle (2pt);
  \draw [fill=white](8,0) circle (2pt);
  \draw [fill=black](1.5,0) circle (2pt);
  \draw [fill=black](4.5,0) circle (2pt);
  \node at (-2-.3,0){$+$};
  \node at (8+.3,0){$-$};
\end{circuitikz}
\end{document}